Own work by DeliriumMaps (Delirium333). The sources used for making the map are the following:

Sources for the base map:
1. 1819 Map of Tondo Province by Ildefonso de Aragon
2. 1885 Map of Manila by Élisée Reclus
3. 1899 Map of Manila Bay from the US Library of Congress
4. January 1902 Telegraph Map of the Philippines from the National Geographic Magazine
5. 1899 Plano de Manila Map by Holliday, Wise & Co.
6. 1898 Map of Manila by Francisco J. de Gamoneda
7. 1910 Map of Cavite Harbor
8. "How the Volcano reclaimed Pampanga from the Sea" by Joel P. Mallari and Robby Tantingco, from the Juan D. Nepomuceno Center for Kapampangan Studies, Holy Angel University

Sources for polities:
1. https://tulay.ph/2021/07/14/exploring-the-mystery-sto-cristo-de-longos/ (for locating Dongos/Longos)
2. "Estado, Topográfico, Estadistíco, Histórico—Religioso, de la Santa y Apostólica Provincia de San Gregorio Magno, de Religiosos Menores Descalzos de la Regular y Mas Estrecha Observancia De Nuestro Padre San Francisco, en las Islas Filipinas" (1865) by Fray. Felix Huerta in original Spanish (Sapa, Meycatmon, Calatondongan, Dongos, Namayan, Meysapan)
3. "Estado, Topográfico, Estadistíco, Histórico—Religioso, de la Santa y Apostólica Provincia de San Gregorio Magno, de Religiosos Menores Descalzos de la Regular y Mas Estrecha Observancia De Nuestro Padre San Francisco, en las Islas Filipinas" in English translated by Dominador N. Marcaida Jr.
4. "Ang Tundo ni Bonifacio, Si Bonifacio sa Tundo" (2014) by Nancy Kimuell-Gabriel (used for Maysilo, Katanghalan and Pulo as well as the boundaries of Tondo)
5. "Pasay - The Travel City” (2013) by Melandrew T. Velasco
6. https://www.makati.gov.ph/barangay/comembo/11?page=162&tab=157 (for Mamancat and Aguho)
7. “Meysapan: The Formation and Social Effects of a Landed Estate in the Philippines’” (1973) by Nicholas P. Cushner
8. “Pre-colonial Manila” from the Presidential Museum and Library
9. “The Philippine Islands, 1493-1898, Volume 3” (1906) by Emma H. Blair and James Alexander Robertson (Tondo, Maynila, Cainta, Navotas, Tambobong)
10. “The Philippine Islands, 1493-1898, Volume 5” (1906) by Emma H. Blair and James Alexander Robertson (for Longalo/Dongalo and Palañac/Palanyag)
11. “The Philippine Islands, 1493-1898, Volume 34” (1906) by Emma H. Blair and James Alexander Robertson (for villages in Pasig)
12. “24th of June 1597: The Founding Date of Taytay” (2014) from the St. John the Baptist Church, Taytay, Rizal
13. “Historical Background and Development” from the Local Government of Angono
14. “History" (for the settlements annexed into Taguig by 1587)
15. “The Origin of Pinagbuhatan” (for Pasig)
16. “Manila, My Manila” (1999) by Nick Joaquin (for Kuyapo/Quiapo, Mayhaligue/Santa Cruz, Malakanyang/San Miguel and Dilao/Paco) (contains some outdated information, read with caution, but a highly recommended book)
17. “Barangay Sixteenth Century Philippine Culture and Society” (1994) by William Henry Scott (claims of land reclamation around Baybay/San Nicolas and Maynila's territorial scope)
18. “Conquest and Pestilence in the Early Spanish Philippines” (2009) by Linda Newson